Handle command line option misuse

You can't pass a url and a file in the same invocation, so we print out
the usage and stop.

1 files changed, 14 insertions, 5 deletions

diff --git a/jamos b/jamos
index c068b5c..e947e3d 100755
--- a/jamos
+++ b/jamos
@@ -75,6 +75,16 @@ def get_command_line_options():
 
     args = parser.parse_args()
 
+    if args.retryFile and args.url:
+        print("Cannot have url and retry flag!\n")
+        parser.print_help()
+        raise Exception()
+
+    if not args.retryFile and not args.url:
+        print("Must pass either a url or a retry file!\n")
+        parser.print_help()
+        raise Exception()
+
     return args
 
 
@@ -218,11 +228,10 @@ def save_urls_from_playlist_to_file(filename, urls):
 
 
 if __name__ == "__main__":
-    args = get_command_line_options()
-
-    if args.retryFile and args.url:
-        print("Cannot have url and retry flag!")
-        sys.exit(1)
+    try:
+        args = get_command_line_options()
+    except Exception as ex:
+        sys.exit()
 
     music_directory = args.output or os.path.join(os.path.expanduser("~"),
                                                   "Music")